CN105696633B - A kind of friction pile supporting effect monitoring system and monitoring method - Google Patents
A kind of friction pile supporting effect monitoring system and monitoring method Download PDFInfo
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- CN105696633B CN105696633B CN201610200038.2A CN201610200038A CN105696633B CN 105696633 B CN105696633 B CN 105696633B CN 201610200038 A CN201610200038 A CN 201610200038A CN 105696633 B CN105696633 B CN 105696633B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
Abstract
The invention discloses a kind of friction pile supporting effect monitoring system and monitoring method, the friction pile supporting effect monitoring system includes：Deformation inside friction pile top displacement monitoring unit, friction pile and soil body interface pressure monitoring unit and antiskid stake body and load-bearing monitor unit；The friction pile top displacement monitoring unit, friction pile with inside soil body interface pressure monitoring unit and antiskid stake body deformation and load-bearing monitor unit be connected respectively with microcomputer by demodulator.Friction pile supporting effect provided by the present invention monitors system compared with existing monitoring system, can realize the three-dimensional monitoring system of thoroughly evaluating friction pile supporting effect, to solve the problems, such as that monitoring content is single low with evaluation accuracy in the prior art；By the supporting effect of the time-serial position accurate judgement friction pile of each monitoring variable, and slopes bad to regulation effect in time use supplement control measures appropriate, realize the effective protection for endangering slip mass object.
Description
Technical field
The invention belongs to Geological Engineering technical fields, and in particular to a kind of friction pile supporting effect monitoring system and monitoring side
Method.
Background technology
With economic construction of China high speed development, especially the strategic decision implementation process of " development of the West Regions ", quantity are many
More Larger Engineering Projects take place frequently area's construction in complex geologic conditions, Landslide Hazards in succession.In the construction and operation of engineering
In the process, landslide disaster causes the safety of engineering great threat.In these large number of Landslides, suitable one
Divide and is administered using friction pile.Due to the complexity of development of landslide Regional Geological Conditions and empirical, the antiskid of design parameter
The engineering accident that failure is administered in stake happens occasionally.Therefore, it is necessary to after the completion of antiskid pile driving construction, its regulation effect is grown
Phase monitors, and is evaluated the anti-slippery effect of friction pile according to monitoring result.
Currently, friction pile monitoring content based on displacement monitoring, i.e., in antiskid stake top setting GPS monitoring points, and
Periodically the displacement of stake top is monitored.Since displacement at pile top can not reflect the phase interaction in friction pile deep and slip mass comprehensively
With so that displacement monitoring data are only capable of limitedly evaluating regulation effect, when pile-soil interaction complexity even cannot be effective
Ground carries out the evaluation of anti-slippery effect.
Invention content
In view of the problem present on, the purpose of the present invention is to provide a kind of friction pile supporting effect monitoring system and prisons
Survey method.
For this purpose, the present invention uses following solution：
A kind of friction pile supporting effect monitoring system, the friction pile supporting effect monitoring system include：
Friction pile top displacement monitoring unit, the displacement for monitoring friction pile；
Friction pile and soil body interface pressure monitoring unit, for monitoring the contact situation between friction pile and surrounding soil,
For judging supporting and retaining system effect of the friction pile to slopes；And
Deformation inside antiskid stake body and load-bearing monitor unit, for monitor deformation inside antiskid stake body and by
Power situation；
The friction pile top displacement monitoring unit, friction pile and soil body interface pressure monitoring unit and antiskid stake body
Internal deformation and load-bearing monitor unit is connected by demodulator with microcomputer respectively.
Preferably, the friction pile top displacement monitoring unit includes GPS receiver, and the GPS receiver is mounted on anti-
At the top of sliding pile, the GPS receiver is for realizing the regular coordinate data for receiving antiskid stake top, and according to two acquisition times
The coordinate value of point calculates displacement.
Preferably, the friction pile and soil body interface pressure monitoring unit include soil pressure after soil pressure cell, stake before stake
Box and soil pressure against piles box, the friction pile are arranged along vertical direction in friction pile stake with soil body interface pressure monitoring unit
With it and it is embedded in the soil body contacted with friction pile.
Preferably, soil pressure cell and soil pressure against piles box are optical fiber grating soil pressure box after soil pressure cell, stake before the stake.
Preferably, soil pressure cell and soil pressure against piles box are arranged at each side of friction pile after soil pressure cell, stake before the stake
Long central axes on.
Preferably, the deformation inside the antiskid stake body and load-bearing monitor unit include strain gauge and reinforcing rib meter, described
Strain gauge is used to measure the deformation pushed up inside friction pile, and the reinforcing rib meter is used to measure the pulling force inside friction pile.
Preferably, identical spacing is alternately arranged strain gauge and reinforcing rib meter on the vertical applied force reinforcing bar in the friction pile.
Preferably, the strain gauge is bundled using steel wire and the vertical tension reinforcement in friction pile, the length side of strain gauge
To consistent with tension reinforcement.
Preferably, vertical tension reinforcement of the reinforcing rib meter by the way of welding and in friction pile welds, reinforcing rib meter
Direction is consistent with tension reinforcement.
A kind of monitoring method monitoring system using friction pile supporting effect, the monitoring method include：Use microcomputer pair
Change inside friction pile top displacement monitoring unit, friction pile and soil body interface pressure monitoring unit and antiskid stake body
The data that shape and load-bearing monitor unit are acquired carry out Digital Signal Processing, by microcomputer storage displacement at pile top, stake Soil Interface soil pressure
Power and pile body internal modification and stress, and draw displacement at pile top, stake Soil Interface soil pressure and pile body internal modification and stress
Time-serial position, the regulation effect of friction pile is judged by the time-serial position comprehensively.
Friction pile supporting effect provided by the present invention monitors system compared with existing monitoring system, can realize complete
The three-dimensional monitoring system of friction pile supporting effect is evaluated in face, and monitoring content includes soil pressure between displacement at pile top, stake soil, pile body change
Shape and stress, to solve the problems, such as that monitoring content is single low with evaluation accuracy in the prior art；By each monitoring variable when
Between sequence curve accurate judgement friction pile supporting effect, and slopes bad to regulation effect in time using it is appropriate supplement control
The effective protection for endangering slip mass object is realized in reason measure.
Description of the drawings
Fig. 1 is the schematic diagram that friction pile supporting effect provided by the present invention monitors system；
Fig. 2 is the structure diagram that friction pile supporting effect provided by the present invention monitors system data acquisition；
Wherein：1- armored concrete GPS monitors pier；The landslides 2- surface；3- friction piles；Soil pressure cell before 4-；After 5-
Soil pressure cell；6- soil pressure against piles boxes；7- tension reinforcements；8- distributing bars；9- strain gauges；10- reinforcing rib meters；11- multichannel waves
Long demodulator；12- microcomputers.
Specific implementation mode
Present invention will be explained in further detail with specific embodiment with reference to the accompanying drawings.
According to Fig. 1, Fig. 2, friction pile supporting effect monitoring system provided by the present invention includes：Friction pile top displacement is supervised
Deformation inside survey unit, friction pile and soil body interface pressure monitoring unit and antiskid stake body and load-bearing monitor unit.
Friction pile top displacement monitoring unit is arranged on the armored concrete monitoring pier 1 at 3 top of friction pile, mixed in reinforcing bar
Solidifying 1 top of soil monitoring pier to disposing GPS receiver in mid-game, to realize the coordinate data for periodically receiving antiskid stake top,
And displacement is calculated according to the coordinate value of two acquisition times.Friction pile top displacement monitoring unit is for monitoring friction pile 3
Stake top horizontal movement value and vertical sedimentation value, to for determining the moving direction of friction pile 3.
Friction pile and soil body interface pressure monitoring unit, by the optical fiber light for being vertically embedded in 3 front side of friction pile
Grid soil pressure cell 4, rear side optical fiber grating soil pressure box 5 and both sides optical fiber grating soil pressure box 6 are constituted, and soil pressure cell is embedded in
In the soil body contacted with friction pile 3, and on 3 each length of side central axes of friction pile.It, can be complete by monitoring soil pressure in all directions
Friction pile 3 and the magnitude of contact situation and primary load between surrounding soil and direction are grasped in orientation, to judge friction pile
The 3 supporting file effect for slopes.
Deformation inside antiskid stake body and load-bearing monitor unit, including strain gauge and reinforcing rib meter, in the pile body of friction pile 3
Strain gauge 9 and reinforcing rib meter 10 are arranged with identical spacing on internal tension reinforcement 7.Framework of steel reinforcement in 3 work progress of friction pile
After the completion of binding, strain gauge 9 is bound using steel wire and tension reinforcement 7, and the length direction of strain gauge 9 is consistent with tension reinforcement 7.Steel
Muscle meter 10 is connect using welding manner with tension reinforcement 7, and direction and the tension reinforcement 7 of reinforcing rib meter 10 are also consistent.Strain gauge 9
With the concrete of the perfusion friction pile 3 after installation is complete of reinforcing rib meter 10.Strain gauge 9 is used to measure the deformation inside friction pile 3, reinforcing bar
Meter 10 is for measuring the pulling force inside friction pile 3.
By optical fiber cable by the optical fiber grating soil pressure box 4 of the front side of friction pile 3, rear side optical fiber grating soil pressure box 5, two
Optical fiber grating soil pressure cell 6, strain gauge 9 and reinforcing rib meter 10 are connected with multi-channel wavelength demodulator 11, using microcomputer 12 to adopting
The data digital signal of collection is handled, and is shown by microcomputer 12 and stored the monitoring data such as soil pressure, pile body deformation and pile body pulling force.It is logical
It crosses excel and draws displacement at pile top, stake Soil Interface soil pressure, the time series of pile body internal modification and stress, pass through each information content
Time-serial position judge the regulation effect of friction pile comprehensively.
Above-mentioned specific implementation mode is used for illustrating the present invention, is merely a preferred embodiment of the present invention, rather than
Limit the invention, in the protection domain of spirit and claims of the present invention, to the present invention make any modification,
Equivalent replacement, improvement etc., both fall within protection scope of the present invention.
Claims (7)
1. a kind of friction pile supporting effect monitors system, which is characterized in that the friction pile supporting effect monitors system and includes：
Friction pile top displacement monitoring unit, the displacement for monitoring friction pile；
Friction pile and soil body interface pressure monitoring unit, for monitoring the contact situation between friction pile and surrounding soil, to
For judging supporting and retaining system effect of the friction pile to slopes；And
Deformation inside antiskid stake body and load-bearing monitor unit, for monitoring deformation and stress feelings inside antiskid stake body
Condition；
Inside the friction pile top displacement monitoring unit, friction pile and soil body interface pressure monitoring unit and antiskid stake body
Deformation and load-bearing monitor unit be connected respectively with microcomputer by demodulator；The friction pile top displacement monitoring unit includes
GPS receiver, the GPS receiver are mounted at the top of friction pile, and the GPS receiver receives friction pile stake for realizing regular
The coordinate data on top, and displacement is calculated according to the coordinate value of two acquisition times；
The friction pile and soil body interface pressure monitoring unit include soil pressure cell and Pile side soil pressure after soil pressure cell, stake before stake
Power box, the friction pile are arranged in antiskid stake body and are embedded in along vertical direction with soil body interface pressure monitoring unit
In the soil body of friction pile contact；Soil pressure cell and soil pressure against piles box are fiber grating soil after soil pressure cell, stake before the stake
Pressure cell.
2. a kind of friction pile supporting effect according to claim 1 monitors system, which is characterized in that soil pressure before the stake
Soil pressure cell and soil pressure against piles box are arranged on the long central axes on each side of friction pile after box, stake.
3. a kind of friction pile supporting effect according to claim 1 monitors system, which is characterized in that the antiskid stake body
Internal deformation and load-bearing monitor unit includes strain gauge and reinforcing rib meter, and the strain gauge is used to measure the change pushed up inside friction pile
Shape, the reinforcing rib meter are used to measure the pulling force inside friction pile.
4. a kind of friction pile supporting effect according to claim 3 monitors system, which is characterized in that in the friction pile
Identical spacing is alternately arranged strain gauge and reinforcing rib meter on vertical applied force reinforcing bar.
5. a kind of friction pile supporting effect according to claim 3 monitors system, which is characterized in that the strain gauge uses
Steel wire is bundled with the vertical tension reinforcement in friction pile, and the length direction of strain gauge is consistent with tension reinforcement.
6. a kind of friction pile supporting effect according to claim 3 monitors system, which is characterized in that the reinforcing rib meter uses
Vertical tension reinforcement welding in the mode and friction pile of welding, the direction of reinforcing rib meter are consistent with tension reinforcement.
7. a kind of friction pile supporting effect using described in aforementioned any one claim monitors the monitoring method of system,
It is characterized in that, the monitoring method includes：It is connect using microcomputer to coming from friction pile top displacement monitoring unit, friction pile and the soil body
The data that deformation and load-bearing monitor unit inside contacting surface pressure monitoring unit and antiskid stake body are acquired carry out digital signal
Processing, by microcomputer storage displacement at pile top, stake Soil Interface soil pressure and pile body internal modification and stress, and draw displacement at pile top,
The time-serial position of stake Soil Interface soil pressure and pile body internal modification and stress, is sentenced comprehensively by the time-serial position
The regulation effect of disconnected friction pile.
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| CN201610200038.2A CN105696633B (en) | 2016-03-31 | 2016-03-31 | A kind of friction pile supporting effect monitoring system and monitoring method |
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| CN201610200038.2A CN105696633B (en) | 2016-03-31 | 2016-03-31 | A kind of friction pile supporting effect monitoring system and monitoring method |
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| CN105696633A CN105696633A (en) | 2016-06-22 |
| CN105696633B true CN105696633B (en) | 2018-08-07 |
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| CN106759547B (en) * | 2017-01-04 | 2019-06-04 | 福州大学 | Integral Abutment, pile foundation and soil interaction pseudo-static experimental measuring device and its installation method |
| CN109764988A (en) * | 2017-11-09 | 2019-05-17 | 深圳市地质局 | Monitoring on Earth Pressure station and geological disaster monitoring and warning system |
| CN107991115A (en) * | 2017-11-23 | 2018-05-04 | 中国铁路总公司 | A kind of model assay systems and test method for studying high gradient slope pier footing stress deformation characteristic |
| CN108035388A (en) * | 2018-01-17 | 2018-05-15 | 杭州鲁尔物联科技有限公司 | Friction pile condition monitoring system and method |
| CN108374439B (en) * | 2018-02-28 | 2020-01-07 | 湖北工业大学 | Deformation monitoring system and evaluation method for early stage skid resistance of large-section skid-resistant pile |
| CN109930635A (en) * | 2019-03-29 | 2019-06-25 | 中国电建集团华东勘测设计研究院有限公司 | The model system and test method of single-pile foundation in a kind of silt soil strata |
| CN110375898A (en) * | 2019-05-30 | 2019-10-25 | 浙江大学 | High-speed rail roadbed mechanical characteristic monitoring device and its application method, production method |
| CN110332902B (en) * | 2019-07-15 | 2020-12-15 | 中国地质大学（武汉） | Distributed optical fiber fixing device and method for monitoring deformation of slide-resistant pile |
| CN110593282A (en) * | 2019-09-24 | 2019-12-20 | 南昌大学 | Antiskid and monitoring integrated antiskid pile |
| CN113774931A (en) * | 2021-09-16 | 2021-12-10 | 中国电建集团成都勘测设计研究院有限公司 | Protector and slide-resistant pile |
| CN113916183B (en) * | 2021-10-09 | 2023-11-28 | 中铁一局集团第二工程有限公司 | PBA structure deformation risk prediction system and application method thereof |
| CN114508116B (en) * | 2022-03-14 | 2023-06-09 | 中铁二院工程集团有限责任公司 | Design method of grading slide-resistant pile for ultra-large capacity waste slag field of mountain ditch |
| CN116929617B (en) * | 2023-07-04 | 2024-03-22 | 广东省建设工程质量安全检测总站有限公司 | Novel support pile curvature and bending moment monitoring method |
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